Dear SUMO community.

We are interested in developing a tool to manually construct an O/D Matrix
to generate flow definitions and consequently, the SUMO routes file.

Since we are not transportation or software engineering experts, we would
like to hear suggestions regarding the data structures and classes which
best represent a time-variant OD Matrix. Moreover, we would like the
matrix's elements to support the required and optional flow parameters,
found in
http://sumo-sim.org/userdoc/Demand/Shortest_or_Optimal_Path_Routing.html.

Consider this use case story: The user has a vector, say [20 30 50 20 10],
representing the vehicle demand in vehicles per hour. He must be able to
provide several vectors of this kind to an OD Matrix, including the
parameters mentioned so far.

We have thought about defining a class with these parameters as attributes.
But how to represent the time-variant behaviour? by constructing many
instances with the same attributes except for begin, end and number? or by
generalizing the number attribute to be a vector?.

Additionally, the classes involved should be defined having a DOM structure
into account, so that we can easily transform it to a valid xml file.

Finally, recommendations about books, articles and so on are really
appreciated.

We apologise if it's already a tool with these features.

Best Regards.


-- 

Andres Felipe Acosta Gil
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